99.36: What happens to the infg--5 8 .jv0sb iba 5zm;ac17ecxdjuvertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not devc ive ree5(n(jx 423 b)oti:vpend on the quantity o(v2e bv3trenc4(5ie:xvi )ojf matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the E cf3*t1b3lv4*tllxxb,n 8 z ylarth has mab l x3 18*4ytf,3v cnbtz*lxllss $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in frxfmr9;z whiqk v ).r: xi(;kc3ee fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth9.r x m) :;(k;cqrhvx3i wkfzi mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocitycp i4xh uau/52 to increase while its acceleration dhcxu4/p aiu5 2ecreases?

  00.11: A certain particlelr, 5o)ngrzw.e 5 b:rn undergoes erratic motion. At every point in its motion, the direction of the particle’s mozlr,ob5n5:e. wgn)r rmentum is ALWAYS

  17.14: A block is suspended 3ghj(udmo g)66q)ll fin the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’fllo gmhgjd6 q3u )6()s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations is cb0nvi13flb(o8 hn c1the net force constantly zero oc cv8f l0in(3oh1b b1nn the object?

  13.28: An object is in free fall clos ykd yc,tw*ca0;d7 er4e to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitakc, 4;cyrd0d7ey w *tude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in eq o -p+x*gv9ne 03iwholuilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N,-0i 3x v*9lnghep w+oo acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be co:( bj t5eoni5( mxj:o.e d)qtimbine to form a resulmeojti o:5( x5n(.edtj: )ibqtant with a magnitude of which of the following

  10.06: Which of the following statements )/4a g 7 a 18nr+rjm5w.ry mdfk*gtwazis most closely associated with Newton’s Third La) gmka+8m/r5.t4rywd w1az7f aj*ng rw of Motion?

  95.06: The reaction force does not cancel the action force bec,i:2u r: fbfmfause:

  14.14: A box rests on the floor of an elevator. The elevator is acctj;,l7qa*jcr 8 0jtbaelerating upwardraajb; ql,*70jtj8 ct . Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air woo)jt t4 x+c fog*k uf2:at14mith constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistanoux4)ftt:*c+ ta g14 o2of mjkce acting on the skydiver during the fall?

  06.08: A baseball is thrown by 9nwserq73 l;0btg c5l x(i ca5a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball5xwgt35(csc;rl079 lbaiq n e exerts on the bat is always

  11.13: A physics book sits at rest ozfgzgf s5,m, (n a table. On top of the book is a calculator, also at rest. Which one of the ,z5sgm f ,g(fzfollowing choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conduc+wm(+2g )ezjzuepdh fd,/q d ,ting an experiment related to Newton's Second Law. The collected data were displayed )fuw ,ghd z+e de2+d,zj p(mq/on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at theqlvfrpa878j newph;6* lzbmagt +:c;69l z.n same time the mass of the object was halved,then the acceleration of the object is +;a ;z7w:nfa9 8l*vb6nreqgml ltppj.z6hc8

  96.15: A car whose mass is 1500 kg is accelerated unif of tc3u4jx0 j(xax+l3ugg9g/ormly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratingt3l4( ua0 jf3+xgx/cg9u oxgj the car is:

  99.05: A tractor-trailer truck is trave emed;n3 k0e-gkzo5e:zr4 t.:oiii8kling down the road. The mass of the trail:-kz3er igd k :e n0i;tmki.o5ozee84er is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains wibysp6 d.x40(-rq zs phy large tractor-trailer t-q(ydi pr0xzsp4s 6. brucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skateh,wr( () ky1rzg/ld lved(s8n r at rest on a frictionless rink throws a 2 kilogram ball, giving the ball dv ( (k,zly/8 (sdrhgnr1)wela velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near qw0+ 9sq4u:/d pqj mw 64oakeothe surface of the earth with a weight of 100 newtons is acceleratedek4 wo90: o6/pu swaq+q 4qdmj at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a73utl6ac, bz m constant force of 2400 N. What is the speed of the lm6bau,73cz tcar 8.0 s after beginning?

  98.32: A 3.0-kg block with initialc2/qh8 eyf1r9nzc6vk speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the1 9h/6vzfkq cyn8erc2 block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 payu6lr4r-t(zx; 2ajm/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of friction isx(-ual6rz 2 t pa4yr;j:

  09.21: A 20.0 kg box remains at rest on a horizontal sur. jzhx(fifyjw0 (t7a3, ycvh+ face while a person pushes directly to the right on the box with a force of 60N. fj3c+hza ti(fh.y7x(jy0v ,w The coefficient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initia.v4 r/ 8wim-vpxwa e;rlly moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best.rx-v iam4r pw/ wv8;e represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its brake0 )u(l )qjecwbs locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the ti()le0uw qcjb) res and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patchg78/ g3tnw:5wogtk sk of ice at a speed v with its brakes locked. It then hits dry pavement 7gnow5w:8gs3k gkt /tand skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on the car's b m2dcz 4nbc7.brakes and skidding to a stop. How far w b4.cdc2m nz7bould the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully kqj2n3+a 7t xlcontrol each of the following devices. Which ot2 x jk73q+lanf these devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 15r09wrow hb 8o7000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 3ow8r rhobw9706 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizont7fp/(gfkh: fdal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T.h f/p(7f dkg:f Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows vhd.qgnv;-yt:+ p5m hlz4 cu4three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest al4mhv +up :-zdvngq y.t54h;c t the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks o; qk lt928pryhpi0aa)f equal length. Assume that on all tracks the roller coasaqp2py9hl i;08 kt)arter carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the cu ihv:l3 g/x/ilrved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at h:/l vgi xl/i3point

  02.40: A box with a mass em1 :zqwy0bu (x w2z)gosy)e;of 50 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crate at a constant speed )m; osxzeg1 yuzyw0e2q)b( w: of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initazb 1j/xws)xoo)(8kn fs3 a;bially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic fri nzwa/ ;s3)8sokfb aj o)1xx(bction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass/mf 92n r) jnbit1l ots4;y7sd with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the varinsort1t2y )m4;/bj9i nlfds7 ous force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a o3gtd 8p alt zfs1kh) 2-rp*v57j8mrotable. Neither is moving. Which of the following stgvodksp-zt52r) o 73mf jth18 8r *aplatements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigher3m6( 8vpld h is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is rvmd h6rle3( p8esponsible for the crate’s increase in speedup the hill?